Lister cultivator



Dec. 28 1926.

J. w. JARMON LIS'IER CULTIVATOR Mnesses Dec. 28 1926.

l J. W. JARMON LI STER CULTIVATOR Filed March 1'7, 1926 3 Sheets-Sheet 2 /7 /3 IW' lul IUI ess es Md,

Dec. 2s, 192s. l 1,612,293

v J. W. JARMON LISTER CULTIVATOR Filed March 17, 1926 5 Sheets-Sheet 5 W/nelss es Patented Dec. 28, 1926.

UNITE STATES JOHN W. JARMON', 0F FREDERICK, DKLAHOMA.

LISTER CULTIVAI'OR.

Application led March 1.7, 1926. Serial No. 95,375.

This invention relates to improvements in lister cultivators, and has more particular reference to two-row lister cultivators.

The primary object of the present invention is to provide improved means for slidably associating the cultivating units or mechanisms with the transverse seat bar of the cultivator whereby extreme freedom or' movement of the cultivator units laterally toward and away from each other is insured so that the cultivator units may readily follow irregular rows or furrows.

A further object is to provide simple, durable and effective means for slidably associating the cultivator units with the seat bar so that turning of the seat bar is prevented iu an effective manner so aS to insure retention or1 the operators seat at the required position when the cultivator is in use. Y

Still another object ot the invention is to provide means :tor permitting the cultivator units to swinglaterally so'that they may follow the irregular rows or urrows even though the seat bar be moved to an oblique position during use of the cultivator with one cultivator unit operating slightly in advance of the other'. l

A further specific object of the invention is to provide means for slidably and pivota-lly associating the cultivator units with the seat bar ot a two-row lister cultivator, whereby an eiiective cultivating operation is had under varying conditions, the construction being simple and durable so as to be capable ot long continued use without special skill or attention.

Other objects will appear as thenature of the invention is better understood, and the same consists in the novel form, combination and arrangement ot parte hereinafter more fully described. shown in the accompanying drawings and claimed. V y e ln the drawings, wherein like' reference characters indicate corresponding parts throughout the several views,

Figure l is a rear elevational view of. a cultivator constructed in accordance with the present invention, the cultivator units being indicated by dotted lines;

Figure 2 is a vertical section taken` upon line 2 2 of Figure l; j

Figure 3 is a section taken upon line 3-73 of Figure 2; Y

5 indicates a transverse horizontal bar upon the intermediate portion ot which is suitably rigidly secured an upright or post 6 carrying the usual form of seat 7 for accommodating the operator of the cultivator, suitable foot rests 8 being also fixed to and disposed orwardly of the bar 5 for the convenience of the operator.

Slidable longitudinally on the endsof the bar 5 for lateral movement toward and away from each other are the pair of cultivator units generally indicated at 9, the free lat eral movement of the units being permitted so that the cultivator units may readily follow irregular rows'or furrows as is well known in the art.

The present invention specifically embodies improved means for slidably asso` ciating the cultivator units with the bar 5, and suoli means preferably includes provision for permitting free lateral swinging movement of the cult-ivator units relative to the bar 5 so that said units will readily follow the rows or turrows even though the bar 5 be shifted to an angle to or obliquely of the line of travel when the'cultivator is in use, under which conditions, one cultivator unit would be disposed to operate slightly in advance of the other In accordance with the present invention, a pair of upright U-shaped supports are provided at each end of the bar 5 and rigidly secured upon a horizontal supporting disk l1 in spaced side by side relation at opposite sides of the center of the disk as clearly shown in Figures l and 8. Vertical ygrooves are provided in the inner sides of the upwardly projecting legs of each support 10 as clearly shown in Figures 3 and' i and slidably disposed in these grooves are two pairs of superposed bearing plates 12 and 13 respectively. Each pair of hearing plates Support horizontal antifriction rollers 14 so that a pair of said rollers is carried in superposed relation in each support 10, and the bar 5 projects between the pair of rollers of each support 10. Thus, each disk 1l is mounted upon an endv of the bar lstops will b'ehpr by means of a pair of spaced slide bearing constructions, and the bar 5 is so shaped and fitted by the rollers 14 as to e'dectively prevent turning of the bar 5 in the support whereby the seat 7 will be maintained in its proper position for supporting` the operator, under all conditions. l-Ls shown, the rollers 1st are grooved to generally/icontorin to the circular cross section of the main or body portion ot the'bar 5, while the rollers 111 are 'further centrally reduced or grooved as at 15 to snugly receive longitudinal ribs 16 provided rigidly upon the upper and lower portions ot the bar In this manner the turning ot the bar 5 is elitectively prevented and entre ne freedom ot' movement ot the slide bearings on the bar is insured. rl'he upper ends ot the legs ot each support 1,() are spanned by means of a cap bar or plate 1? which is rigidly secured in place by means oi bolts 18, and the legs ot each support 10 are preferably madezot sectional term as shown in Figure l with the bolts 18 also securing the sections thereof together. This construction is preferable for facilitating manufacture as well as eX- peditin-g assembling or dis-assembling the parts. An adjusting plate 19 is disposed between the legs of each support 10 beneath the cap bar 17 and has downturned ends 2O fitting in the grooves and bearing upon the upper edges ot the upper bearing` plates 12. in adjusting screw 21 is threaded through the central portion of each cap bar 17 so as to have its lower end bear upon the cent lal portion ot the associated plate 19, whereby, upon turning said adjusting,` screw 21 in one direction, the upper roller may be forced into the required trictional contact with the bar 5 so as to cause corresponding engagement ol the bar with the lower roller and thereby attain most effective operation of the device.

Each cultivat-or unit 9 is suitably rigidly attached to the underside of a second relatively ,large disk 22and each disk 11 is flatly disposed upon a disk 22 and centrally pivot'ed to the latter as at 23 upon a vertical axis whereby the cultivator units are permitted 'to freely swing i-n a late-ral direction relative lto the bar The preferred manner oi pivoting eac-h pair ot vdisks 11 and 2v2 together consists in threading a screw into the lower disk so that the. saine 'rreel'y passes through aV larger opening the disk '11 shown in Figure 3, and in order to further restrain the associated di'slzs 11 and V22 against relative lateral displacement, suitable rigid lips .'24 are: provided `upon the periphery ot the lower disk 22 A so to project upwardly and lit overv the rounded 'edge ofthe adjacent ,dishA 1'1 as shown clearly lin Figi 2 and 5. 4 Suitable ed ait 4the ends of the bar 5 for linntnfgl the separating Inoveterasse ment of the cultivator units, such as the cross pins shown at 25 and arranged to engage the rollers of the outer slide bearings ot each cultivator unit.l

From the above it will be seen that each cultivator unit is slidably associated with an end portion of the bar 5 by means of a pair of spaced slide bearings which insure against bindingso that free movement of the cultivator units toward and away from each other is had. It will also be seen that the required prevention lof turning,- of bar 5 will be el'liectively had and that the lateral swinging ot' the cultivator units is made possible by mee-.ns of a construction which is durable and tree of play by reason of having the characteristics of turn tables or large lit'th wheel constructions as embodied in vagon constructions.

It will be further seen that by rcaSOD 0f permitting the swinging of the cultivator units, they will readily follow irregular rows or furrows even though one unit be shifted to a position in Vadvance of the other by sudden movement of the bar 5 to a position oblique to the line of travel ot the cultivator. rIhe `disks 22 also furnish edective means for facilitating proper attachment 'of the cultivator units to the slide bearings.

Minor changes may be made without de'- parting from the spiritand scope of the invention as claimed.

What I claim as new is 1. In a two-row lister cultiva-tor, a transverse horizontal seat bar, a pair of spaced slide bearings movable lonOitudinally upon each end portion of the bar, said bar and said slide bearings being cooperatively constructed to prevent turning of the bar in said slide bearings, a support upon which each pair ot slide bearings is rigidly mounted, and means associated with each support for facilitating attachment of a cultivating unit thereto.

2. In a two-row lister cultivator, a transverse horizontal seat bar, a pair of spaced slide bearings movable longitudinally upon each end portion ot the bar, said bar and said slide bearings being cooperatively constructed to prevent turning of the bar in said slide bearings, a support upon which each pair ot Vslide bearings is rigidly mounted, means associated with each support for facilitating attachment ot a cultivating unit thereto, said supports comprising relatively large horizontal disks, further relatively large horizontal disks pivoted 'to the undersides ot the first named 'disks for rotation about vertical axis, the means 'for facilitating attachment or" the 'cultivating units being 'carried by the undersides ot' the last named disks.

3. In a two-row lister cul'tivator, a transverse horizontal seat bar, 'a pair of spaced slide bearings movable longitudinally upon lll?) llf) each end of the seat bar, a t-urn table supporting each pair of slide bearings and embodying upper and lower disks, and a cultivating unit attached to the lower disk of each turn table.

4f. ln a two-row lister cultivator, a transverse horizontal seat bar having rigid longitudinal ribs upon the upper and lower side portions thereof, apair of slide bearings fixed in spaced side by side relation and niovable longitudinally upon each end portion of the seat bar, eaoh slide bearing embodying a pair of super-imposed anti-friction rollers arranged to fit the bar and the ribs of the 1,: latter and to receive the bar therebetween f? verse horizontal seat bar having rigid longitudinal ribs upon the upper and lower side portions thereof, a pair of slide bearings fixed in spacedside by side relation and movable longitudinally upon each end portion of the seat loar7 each slide bearing embodying a pair of super-imposed anti-friction rollers arranged to lit the bar and the ribs of the latter and to receive the bar therebetween whereby turning of the bar in the bearings is prevented, a cultivating unit supporting each pair of slide bearings, each slide bearing embodying means for adjusting the upper roller thereof toward the shaft and the lower roller of the same for regulating the amount of pressure with which the rollers engage the seat bar.

6. In a two-row lister cultivat-or, a transverse horizontal seat bar, slide bearings movable longitudinally upon the ends of the seat bar, a support upon which said slide bearings are fixed, and cultivating units pivoted to the supports for lateral swinging movement.

In testimony' whereof I aiiix iny signature.

JOHN W. JARMON. 

